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(No Model.)

C. W. GARLAND.

SEWER GAS TRAP MOLD. Nol 335,279. Patented'Peb.'21886-.

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UNITE STATES PATENT FFICE.

CHARLES XV. GARLAND, OF OAKLAND, CALIFORNIA.

SEWER-GAS-TRAP MOLD.

SPECIFICATION forming part of Letters Patent No. 335,279, dated February 2, 1886.

Application tiled September Q0, 1884. Serial No. 143,558.

To all whom t may concern:

Be it known that I, CHARLns W. GARLAND, a citizen ofthe United States, residing at Oakland, in the county of Alameda and State of California, have invented a new and useful Improvement in SewerfGas Traps, of which the following is a specification.

My invention relates to sewer-gas traps, and it consistsin certain construction by means of which-labor is saved in construction and uniform and better work is insurel. It will be readily understood by reference to the accompanying drawings, and the letters marked thereon.

Figure lis a side sectional elevation, and Fig. 2 an end elevation, of a trap, having the new construction. Fig. 3 is a side sectional elevation of the same, showing the core in position after the trap is cast. Fig. 4 is a side sectional elevation of the trap, showing the core in the act of being removed from the same.

Thefollowing is the construction ofthe same: A represents the neck of the trap; B, the graduated curved part, forming the connection of the neck with the trap.

C represents the trap-chamber.

D represents the trap-screw opening.

E represents the ventscrew for attaching the vent-pipe.

E represents an eXteriorly-threaded ring.

F represents the graduated and curved part connecting with the discharge or waste pipe.

G represents the wastepipe.

In Figs. 3 and 4, H represents the core of the straight portion of the neck or receivingpipe.

I represents the core of the curved portion of the neck, which connects with the main chamber of the trap.

J and K represent the core ofthe main trapchamber.

L represents the core of the curved connec tion leading to the discharge or waste pipe S represents the connecting dovetail for the core J and K of the main chamber.'

N represents the core of the discharge-pipe .The core H is tapered from the top down to the dotted line d d, and draws out upward. 'The core I tapers from the line c c in and up (No model.)

to the line a u, and draws or is rather pushed into the main chamber Cafter the core J K is removed and taken out through the opening of the vent-screwE from that part. The core L is tapered from the dotted line d to the line c, and is also pushed into the chamber C and taken out at the vent-screw or coupling E. The discharge-pipe G tapers from the bottom up to the dotted lines d, and the core N draws out at the bottom.

The core J K of the chamber C is formed in two parts for the purpose of removing the same by drawing` out through the vent-screw E. The lower core rest or bearing, I),is screwed onto the lower end of the cores J and K, as shown, and it assists in the perfect adjustment of the core in the mold and in bringing the parts J and K to proper adjustment with each other. In taking out this core after the trap is cast, thelower rest, P, is unscrewed from the core J K, and the core K driven or started out by tapping upon thc projection R, (whichis sim ply a lengthening out of the core K.) It is then readily drawn out throught the ventopening E. rIhe object of the dovetail S is to insure the perfect lateral adjustment of the parts of the core J K with each other. The core J is readily pulled over and drawn out through the vent E as soon as the core K is removed. The core II is then drawn out at the top ofthe trap-neck A; and the core I is pushed into the chamber C and easily taken out through the vent-opening E. The core N is then taken out at the lower end of the waste. or discharge pipe G, and the core L pushed into the chamber C and taken out at the ventopening E. The trap is then ready to bc taken from the mold.

By this construction the vent coupling or screw is cast in the trap, thereby saving the usual work of soldering and wiping ajoint, and the construction ot' the neck A tapering down to the line c a is to allow the core H to draw out at the top from that point, and the curved part B tapering from the point of its junction with the main chamber C to the point a c is to allow the core I to be pushed into the chamber C; and the core J and K is in two parts, as described, so as to draw out at the top, and the curved part F is tapering from the line c to the line d, so that the core IOO L may be pushed into the chamber C, and the Waste-pipe G tapering from the bottom up to the dotted line d is to allow the core N to draw from the point or dotted line d down ont at the bottom of the same.

I generally forni the vent-screw ring E of brass; but other metal may be employed which may be readily placed on the core J K to be cast in the trap, thereby saving the soldering of the same in after the trap is east, besides forming the opening to take ont the Cores I and L.

' The ring or sleeve E for the opening isinade separate from the core, and is eXteriorly threaded, and when the trap is to be cast, is placed upon the core, so that when the latter is placed in the mold the met-al will be east around it. After the trap has been east, and the cores removed, the ring or sleeve is removed by unserewing it. This being` allowed since the pipe is of soft metal.

Having thus described my invention, what I claim, and desire to secure by Letters Patent isi l. In sewer-gas traps, the combination of the cores .I K, having the dovetailed connection and threaded lower ends, and the threaded bearing l?, substantially as set forth. y

2. Theeombination of the cores J K and the vent-screw ring E thereon, as set forth.

3. The combination of the eoresJ K, having the dovetailed connection and threaded ends, the bearing P, and the vent screw E, as set forth.

4. The combination of the cores J K, having the ventserew ring E, the cores H N, and the curved cores I L, as set forth.

5. The combination of the eores J K, having threaded lower ends, the bearing P, the vent-sorew ring E, the Cores H N, and the curved eores I L, as set forth.

CHARLES V. GARLAND'.

Vitnessesz' v J oHN H. REDsToNE, L. E. REDsToNE. 

